区域气候-化学-生态耦合模式的发展及其在短寿命大气污染物气候效应研究中的应用

细颗粒物和臭氧是大气中重要的同时具有化学和辐射活性的短寿命物种，利用数值模式研究其化学耦合机理和辐射气候效应是当今大气科学的前沿课题。本项目旨在现有区域气候模式的基础上，发展一个包含大气多相化学、细颗粒物-光解率-臭氧相互作用、二氧化碳源汇和输送、生态源排放的区域气候-化学-生态耦合模式，实现对臭氧、细颗粒物和二氧化碳时空分布、相互作用、辐射强迫和气候效应的模拟。通过资料检验和模式比较对耦合模式的性能进行定量评估，采用数值模拟手段弄清臭氧和细颗粒物化学耦合的机理，评估臭氧和细颗粒物的辐射效应及其对东亚季风气候的可能影响，研究气候变化对臭氧和细颗粒物的反馈作用。本项目对于深入认识中国地区空气污染和气候变化的相互作用，科学应对气候变化和合理控制大气污染具有重要的科学意义和应用价值。

Fine particle and ozone are short time life species with chemical and radiative activity in the atmosphere. It is a frontier research topic to study the chemistry couple mechansism and radiative climate effect based on numerical model. This proposal will develop a regional climate-chemistry-biology model, which includes multiphase chemistry, fine particle-photolysis-ozone ineraction, source and sink of CO2, biogenic emission processes. The model performance will be assessed through data examination and model comparison. The chemistry coupling mechanism, radiaitive effect of ozone and fine particle as well as their effect on monsoon climate will be investigated by use of numerical simulations. The feedback of ozone and fine paticle on climate change will be examined. The project has important scientific significance for understanding the interaction between air pollution and climate change, and has significant practical value in climate change adaption and air pollution control.